Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio results for s2719dgf

Contrast ratio 518:1
Monitor model s2719dgf
Submitted 16 Mar 2019 13:38 CET, by 141.136.*.*
Camera model samsung SM-G935F
Processing remarks

image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
image file 3: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?

Black
Screen photo
[open image]
Luminance 0.25 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –3.31 stops   (aim for –2 to –3)
Exposure spread 0.34 stops
Area used for calculation 0.34 x 0.48
Camera settings Exposure time: 1/4   ISO: 400   F-number: 1.7
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 129 cd/m2
Luminance spread 26 cd/m2 (2 standard deviations)
Exposure value –1.3 stops   (aim for –2 to –3)
Exposure spread 0.29 stops
Area used for calculation 0.34 x 0.481
Camera settings Exposure time: 1/516   ISO: 400   F-number: 1.7
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 59 cd/m2
Luminance spread 119 cd/m2 (2 standard deviations)
Exposure value –1.73 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.339 x 0.485
Camera settings Exposure time: 1/320   ISO: 400   F-number: 1.7
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0

The luminance values in cd/m2 are not very reliable, since camera sensitivities can easily differ up to 50% from their nominal value. Typically, the real luminance is 30% lower than this number. The area used for calculation is chosen such that it corresponds to a viewing angle of ±14° horizontally and ±10.5° vertically, which is equivalent to viewing the screen from a distance of about 1.5 times the diagonal size.

Unfortunately, there is a lot of variation in how cameras use EXIF settings. If photos from your camera your produce unusable results, try coming back in a few days. I review submitted pictures regularly and try to fix problems.